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'July 5,1927. 1,634,415

D. W. FRANCHOT SINGLE-ummm mcHANIsM-'FOR MULTIPLE BARREL@ suus Filed au15. 192 :5 Sheets-Sheet 1 und" IL D. w. FANHoT SINGLE TRIGGER MECHANSM FOR MULTI'PLE' BARRELED GUNS r 1 1. A u

July 5, 1927. 1,634,415

D. wQFRANcHoT SINGLE'.IRIGGER MECHANISM FOR MULTIPLE BABRELEUGUNS..

Filed Aug. 1a. 192e; s sheets-sheer 3 Fatented July 5, 1927.

tlhii S'FTFS resent raient erstes;

DOUGLAS 'W'. FRANCHOT, OF TULSA,v OKLAHOMA.

SINGLE-TRIGG-ER MECHANISIVI FOR MULTIPLE'eBR/EELED GUNS.

Application led August 13, 1926. -Serial No. 129,049.

My invention relates to improvements in gunsl and more particularly to the firing.

tion necessitates that the shooter shift his linger from one trigger tothe other, vto discharge both right and left barrels. Such a required `change in position of the hand, when firing both barrels. in rapid succession, 5 often destroys the accuracy of the aim of the second shot. Y

To obviate this disadvantage, and tol make possible more rapid discharge of the two barrels of the gun, numerous single trigger firing mechanisms have been proposed.

Such devices have, howevr, been faulty inasmuch as the automatic selector or hre control mechanisms l'iave been unreliable in operation, resulting in both barrels being 25 tired simultaneously, and also, due to the fact that no means has heretofore been provided for'loelring the automatic `lire control mechanism against shifting, to a position to fire the second barrel during the rebound of the gun, which occurs at the time of recoil.

It is therefore'the primary objectof my invention to eliminate Asuch faults anddisadvantages as above pointed out, and to provide a simple, compact and reliable tiring mechanism for multiple harreled guns employing a single finger trigger.

A further object of my invention is to provide spring-actuated means co-operating with the linger trigger for positively setting the fire control mechanism to discharge either the rightor left barrel of the gun upon actuation of the linger trigger.

A still further object of my inventionV is to provide reliable safety means co-operating with the lire control mechanism, during recoil of the gun, to positively lock the firing mechanism during rebound in its selected position, and thereafter to automatically release said mechanism to reset in position to lire the second barrel.

Referring now to the accompanying drawings, which are made a. part hereof, and on which similar reference characters indicate similar parts: i

Fig. l is a side elevation of a double barreled gun with certain parts of the frame removed, and the stock shown in section, to illustrate the construction and relation of parts constituting' my impro-ved anism before the gun is cocked.

Fig. 2 is a view similar to Fig. l,v of the reverse side of the gun, illustrating therelation kof parts when the opening the breech. s

Fig. 8 is an enlarged side elevation, partly in section, of the gun firing mechanism., illustrating the position of parts when slight pressure is exerted on the finger trigger in the act of firing the first barrel of the gun.

Fig is a view similar to Fig. 3, showing tiring mechgun is cocked the position of parts at the time vthe first barrel of the gun yis discharged.

Fig'. 5 is a view similar to Fig. 3, butin full lines, illustrating the position of parts immediately after the first barrel ofthe gun has. been discharged, and, v

Fig. 6 is a view similar to Fig. 5, illustrat-ing' the posit-ion of parts at the'time the second barrel of the gun is fired. j

In theV drawings, the parts indicated as'A represent the usual trigger plate which forms the lower rearward extension of the frame B, C the'fore-end iron which is pivoted at D in the frame E, and E and F the left and right barrels of the gun which are carried by the fore-end iron C- fl ll of these partsand such mechanism .as is enclosed thereby, and not specically referred to hereinafter, may-be of any well lrnown'or approved construction and design, provided they do not depart from the spirit of my in` vention.

Secured on the trigger plate A, nea-r1 the forward end thereof, is a trigger bloclr'l, in which the forward end of a linger trigger piece 2 is pivotally mounted on a transverse bolt 3. The trigger piece 2 is formed at .its upper rear end with 'an upwardly pointed extension 4, which, in the normal uncooked position of the parts, as shown in'Fig. l, projects through the trigger slotin thev plate A to a point slightly above the upper sur.- y

face thereof.

Also block l, is a sear lifter arm '5,' which eX- tends rearwardly from the block l over the upwardly `pointed extension 4, of the trigger 2. A. leaf spring member 6 is formedin piece with, or secured to, the under side of the arm 5 at a point adjacent the forwardpivot-ed end thereof, and eXtendsrea-rwardly therefrom in normal spaced relation to the pivoted on the-bolt 3, in the trigger Cil arm, to a point slightly beyond therrear end of the arm. To the rear free end of the arm 5 is pivotally mounted a fire controll member 7, which is normally held in a ver- 5 and to the rear of its pivotal connection 10 with the arm.

In the primary position of the member 7 the pointed lower end 9 is just free of the upper surface of the leaf spring 6. upper end of the fire control member 7 is formed at its forwaij'd edge wth an upstandingprojection or guard 11,'and at its rear edge with a considerably longer projection or stop 12,.providing between said projections a movement limiting notch 13.

Immediately to the rear of the'fire control member 7 is a block 11i which is bolted to the trigger plate A, and is formed at its upper end with a yoke portion 15 whicheX- tends forwardly from the block 14e over the upper end of the fire control member 7.

In the normal uncooked position of parts, the guard projection 11, of the fire control member '7, is positioned immediately below and rearwardly of the forward closed end 16, of the confining slot 17, in the y-oke portion 15, and the stop projection 12 extends up into the slot 17.

The conning slot by the yoke portion 15, extends rearwardly from the closed forward end 16, of the yoke, through the upper end of the block 14, as is clearly shown in Figs. 3 and 4.

To the lower rear end of the block 14; is pivotally mounted a counterweight 18, which is normally held in its rearward position shown in Figs. 1 and 2 by a coiled spring 19 interposed between the block 14; .and weight 18 above the pivotal connection 20. The upper end of the counterbalance weight 18 is provided with an aperture 21, inwhich a rebound delay plunger 22 is slidably mounted.

By reference particularly to Figs. 3 and 4. it will be seen that the rear portion of the plunger 22 is provided with a slot 23, through which a pin 24C, secured in the weight 18, extends. A coiled spring 25 is interposedv between the forward end of the slot 23 and the pin 24, and serves to hold the plunger normally extended from the forward face of the weight 18. rlhe forward end of the plunger 22 Vextends into the rear open end of the confining slot 1'2", and is provided with a slightly enlarged head having a rounded nose 26`which, in the operation of the parts, later to be described, cooperates with trol member 7, to lock the member in .the

The

17, which is provided the rear edge of the fire con-V confining slot 17 duringthe recoil and rebound of the gun.

Secured to one side of the block 14: is a wire spring 27, the free end of which bears on the upper surface of the sear lifter arm 5, to assist the arm vin rapidly following the movements of the trigger 2.

Within the frame B is housed the usual hammer mechanism, not shown, which is controlled by a pair of pivoted hammerholding sears 28 and 29. The sears 28 and 29 extend rearwardly on opposite sides'of the trigger block 1 from' their pivotal mountingl in the frame, and are provided at their rear free ends with inturned trip-projections 30 andy 81 respectively, overlying the sear lifter arm 5 as is usual in the construction of certain gun firing mechanisms of this character. Y

In the operation of my improved` single finger trigger firing mechanism for double barreled guns, it will be noted that the inturned projecting` ends 30 and 81 of the hammer-holding sears 28 and 29, occupy different planes relative to each other, above the upper surface of the scar-lifting arm 5. It is obvious therefore that, Vwhen the hammers, not shown, Vof the gun are cocked by breaking t-he gun as shown in Fig. 2, rocking the sears 28 and 29 on their pivots in the frame B, only the lowermost trip projection 81 will 'cont'actwith the Sear-lifting arm 5, Y

depressing the arm towards the trigger plate A. The arm 5 is thus rocked on its pivot 3 in the trigger block 1, slightly compressing the leaf spring 6, on the upper surface of the trigger plate A, and the upwardly pointed extension l of the trigger piece 2.

During this operation the rear pointed lower end 9 f the re control member 7, is brought into sliding contact with the upper surface of thek leaf spring 6, rocking the member 7 forwardly on its eccentric pivot 10, in the free end of the arm 5, to posit-ion the guard projectionll under the forward closed end 16 of the yoke 15.

The gun now being cocked, and the mechanism set to fire the first barrel of the gun, by depressingthe finger trigger 2, attention is called to Figs. 3 and 4f. 1t willbe noted by reference first to Fig.` 3, that, when pressure is first `exerted on the finger trigger 2, as indicated by full lines,fthe upwardly pointed extension 4l, ofthe trigger piece 2, lifts the leaf spring-6 from th trigger plate A, further compressing the spring 6 towards the sear lifter arm 5. Inasmuch as the lower pointed end 9 of the fire controlfmember is eccentric to its pivotal connection 10, with Vthe arm 5, the member 7 is now rocked forward in the confining slot 17, until ythe stop projector 12 contacts with the closed forward end 16 of the yoke 15.

As 'pressure on the finger trigger 2 is continued, as indicated by full lines in Fig. Ll,

the sear lifter arm 5 is raised, lifting the trip projection 31 of the sear 29 until the hammer, of the iirst barrel F of the gun, is released to explode the charge. It will also be noted that, as the Asear lifter arm 5 iS raised by the pressure exerted on the under side of the leaf spring 6, by the trigger projection 4, the selector member 7 is positively held in its foward rocked position while'the hammer-holding sear 29 is being raised. The scar lifting arm 5 is t-hus prevented from being' lifted far enough to engage the trip projection 30, of the hammer-'holding seal'Y 28, by engagement of the movement limiting notch 13, in the upper end of the fire'control member 7, with the forward closed end 16, of the yoke 15. The parts are thus locked Vbv the fire control member 7, making it im-v possible for the shooter to unintentionallyY lire both barrels of the gun simultaneously.

lVhen the explosion of the charge in the first barrel occurs, the entire gun is thrown backward in what is termed the kick or recoil and involuntarily and beyond ther power of concentration of the shooter, the

finger of the shooter is released momentarily from the trigger. This interval of time when pressure is released on the finger trigger, which I will call the crisis of the explosion, wouldpermit the leaf spring 6 to spring away from the sea-r lifter arm 5, releasing tension on the rear pointed end 9 of, the fire control member 7, permitting the member 7 to return to its primary position through the action of the wire springy 8 as the arm is forced downward by the wire spring 27. y

At the time of recoil there is, however, another action of the gun which is known as the rebound, which action sometimes, during the crisis of the explosion, thus dislodges the notched end of the iire control member 7 from its locking engagement with the closed ond 16 of the yoke 15, causing both barrels of the gun to be involuntarily fired.

To provide against any such failure of the parts to remain in select-ed position during the rebound of the gun, I have provided a safety locking means which'co-operates with the fire control member 7 to positively hold the member locked in the confining Slot 17 until the crisis of the explosion is over.

By reference particularly to Fig. 4 it will be seen that the parts are in the position which they will assume when the charge in the first barrel F is exploded, and the gun is recoiling. The rounded nose 26 of the delay plunger 22` which is slidablymounted in the pivoted weight 18, is thrown into engagement with the rear edge of the fire control member 7 by the forward rocking movement of the weight 18 and pin 24v Ycompressing the coiled spring 25 against the for-v ward end of the slot 23, in the plunger.

As the arc traversed by the weight 18 during lrecoil is approximately twice 1that of the plunger 22, the weight is caused towslide forward on the plunger after'the forward movement of the plunger 22 has been arrested by contact of the nose 26 with thek member 7. This forward sliding movement 0fl the weight 18 on t-he plunger 22, rocks theV forward end of the plunger downwardly, sliding the rounded nose 26 down the'rearwardly inclined edge of rthe member 7, further compressing the coiled spring 25 against the pin 24. r A

The plunger 22 is thus held in contact with the member 7 under the tension of the coiled spring 25 during recoil, as shown by full lines in Fig.y4, and also remains in upwardly sliding contact with the member 7 under the tension of the spring 25 during the rear# ward rocking movement of the weight 18 during rebound, as indicated by dotted lines. The fire control member 7 is thus .held up in locked position with the forward closed e-nd 16 of the yoke 15 during the crisis of the explosion when pressure is involuntarily released from the nger trigger .as kbefore explained. Y

Upon the full return of the weight 18'to its primary position under the action vof the spring 19, and release'of pressure on the Enger trigger 2, the parts are returned to their primary positions under the action of the wire springs 8 and 27, as shown in The leaf spring 6 now having sprung away from the eccentric pointed end 9 of thev fire control member 7, the upstanding guard projection 11 has moved rearwardly under the closed end 16 of the yoke 15, to a position under the retaining slot 15.

The mechanism is now reset todischarge the left or second barrel E of the gun, by again depressing the iingertrigger 2.

By reference to Figs. 4 and 5. it will be noted that the inturned trip projection 31 of the hammer-holding sear 29 sprung'to a position above the trip projection 80, when releasing the hammer to discharge the first barrel of the gun. l

As the finger trigger 2 is depressed to discharge the second barrel of the gun, the first upward movement of the searlifter arm 5 is unrestricted except for the light tension of the wire spring 27 which tension is not sufficient to cause the upward projection 4 of the trigger piece 2l to deflect the leaf spring 6 to engage the eccentric point 9, of the member 7. Y The guard projection 11 of the fire control member'7 is thus lifted unobstructed into the confining slot17 to the rear of the closed end` 16 of the yoke 15, Y i

permitting the sear'lifting arm 5 to come in contact with the trip projection 30, of the hammer-holding sear 28,- tov discharge the second barrelv of the gun, as is illustrated in Fig. 6.

lon

At the 4time the charge in the second, or left barrel E of the gun isY exploded, the safety mechanism, consisting Aof the pivoted weight 18 and dei y plunger is again brought into 'action sli-own in d'. 6, but this action -on the second shot of course serv-es no particular function, as the gun shown to illustrate my invention is provided with but two shot barrels.

The mechanism shown by the drawings and above described, forms a complete operative gui?, all the parts of wl ich cooperate in the operation of the gun to accomplish the purposes described.

What I claim is:

1. In a single finger trigger firing mechanism forV multiple baireied guns comprising, hammer-holding sears, a iii C r trigger, a sear lifter, an ii'idependcntly niovable fire control means opemti ed by the trigger and (zo-operati for automatically controlling tile operation of said Sear lift-er relative to si 'Vd sears.

2. In a single finger t ger firing mechanism for multiple barreled @uns comprising, hammer-holding sears, ringer tr'md r, a sear lifter, a tire control member co-operating with said scar lifter, `and an independently movable lire control member operating 'means operatively engaged byY said trigger and co-operating with said Sear lifter and said fire control memfr for automatically controlling the operation of said sear lifter relative to said sears.

3. In a single finger trigger .firing mechanism for multiple barrcled guns comprising, hammer-holding sears, a finger trigger, a sear lifter, a fire control member carried by said sear lifter, and an independently movable fire control member operatsear lifter and ing means carried by said operatively engaging said 4. In a single finger trigg nism for multiple barnied i han'imer-holding sears, a fine-er tri sear lifter spaced' from said fin a fire control member, an l Ci member operating means operativejv ing said finger' trigger ant said sear li 5. In a single finger trigger nism for multiple barreled ing, hammer-holding sears, a iin a sear lifter spaced fr in said fi a fire control member oper by said sear lifter, and a interposed between said scar l. linger trigger.

member and said 6. In a single finger mechanism for multiple comprising, hammer-holding s r trigger, a spring retracted sea A said finger trigger, and a spring actuated fire control means operatively carried by said se'ar lifter and engaging said finger trigger.

7. In a single Vfinger trigger firing mechamsm for multiple barreled guns comprising,,hammer-holding sears, a finger trigger,

ally mounted on said sear lifter and normally spaced from said leaf spring, and a yolre member cooperating with said fire control member.

9. Ina single finger trigger firing mechanism for multiple barreled guns compris-y ing, hammer-holding sears, a finger trigger, asear lifter movable relative to said finger trigger, a spring member 'interposed between said sear lift-er and said finger trigger, a fire control member eccentrically pivoted in said sear lifter and having its lower end normally spaced from said spring member, and a yoke member (zo-operating with the upper end of saidv fire control member.

lO. In a single fingerL trigger firing mechanism for multiple barreledguns comprising, hammer-holding sears, a finger trigger, a searlifter movable relative to said finger trigger, a fire control member eccentrically pivoted in said sear lifter and having a portion depending below said sear lifter and in normal spaced relation to said leaf spring, said fire control member having a guard projection and a stop projection at its upper end providing a movement limiting notch therebetween, anda fixed yoke member co-operating with the upper end of said fire control member.

ll. In a single linger trigger firing mechanism for multiple barreled guns comprising, hammer-holding sears, a. finger trigger, a pivoted sear lifter movable relative to said finger trigger, a leaf spring secured to the under side of said'sear lifter and operatively engaging said finger trigger, a fire control member having a notched upper end and a vstop projection pivotally mounted in said sea-r lifter, said fire control member having an operating projection eccentric to its pivot lin said fire control member and normally tric to its pivotal mounting, a yoke member' co-Operating With said lire control member, a inger trigger, and a leaf spring carried by said sear lifter and interposed between said linger trigger and the lower pointed end of said fire control member.

13. In combina-tion with a multiple barreled gun tiring mechanism including a single finger triggerand tire control means, a spring member carried by said lire control means and engaging said tinger trigger to control the operation of said tire control means.

14. In combination With al multiple barreled gun firing mechanism including a single linger trigger and a lire control means, a sear lifter movable relative to said linger trigger, and an independently movable lire cont-rol operating means interposed between said sear lifter and said finger trigger and co-operating with said lire control means.

15. In combination With a miltiple barreled gun tiring mechanism including aA single finger trigger and a tire control means, a. sear lifter co-operating with said lire control means and movable relative to said tinger trigger, and spring means carried by said sear lifter and normally spaced from said ire control means and co-operating With said finger trigger to engage said tire control means When the gun is cocked.

16. In combination VWith a multiple barreled gun tiring mechanism including a. single finger trigger and tire control means operated by the finger trigger, recoil operated means co-operating with said lire control means comprising a Weight operated delay plunger.

v1'?. In combination With a multiple bar` Yreled gun firing mechanism including a single linger trigger and tire control means operated bythe linger trigger, recoil operated means co-operating With said lire control means comprising a pivoted Weight, a plunger slidably carried by said Weight, and a spring interposed between said plunger and Weight. y Y

18. In combination with a multiple barreled gun iiring mechanism including a sin# gie tiring trigger and a lire controlmeans operated by the nger trigger, a fixed yoke co-operating with said lire control means, and recoil set-ting means carried by said liked yoke for locking said re control means in said yoke during rebound.

19. In combination with a multiple barreied gun ring mechanism including a single finger trigger and a tire control means operated by the iinger trigger, a fixed yoke member cooperating with said lire control means, a recoil operated Weight carried by said yoke, and a spring'pressed member cooperating' With said Weight and said yoke to lock said tire control means in said yoke during rebound. y

20. In a single linger trigger liring mechanism for multiple barreled guns comprising a Vlire control means, a fixed yoke member -co-operating with said tire 4control mea-ns, ak weight pivotally mounted on said yoke, and a tire control locking member carried by said vWeight and movable relative to said Weight and yoke to engage and lock said lire control means.

noUeLas vv. rnaivcaor. 

